Борат натрия неочищенный технический. Определение содержания щелочерастворимого алюминия. Титриметрический метод с применением EDTA
Название (англ.):
Crude sodium borates for industrial use; Determination of aluminium soluble in alkaline medium; EDTA titrimetric method
Описание (англ.):
Applicable to products in which the content of soluble aluminium, expressed as Al2 O3 , exceeds 100 mg/kg. The preparation of the test solution is carried out according to ISO 2217. The reaction proceeds with the formation of the complex between EDTA and aluminium in an aliquot part of solution. Decomposition of the complex using sodium fluoride. Titration of the amount of liberated EDTA against a zinc chloride solution of known concentration in the presence of xylenol orange as indicator.
Дата регистрации:
04.05.76
Дата введения:
01.04.76
Дата отмены:
30.05.02
Код КГС:
Л19
Код ОКСТУ:
2146;2109
Код ОКС(МКС):
71.060.50
Код ОКП:
2146;2109
Нормативные ссылки:
BS 5688 PART 20-1979, EQV*NBN T 31-360-1981, EQV*NF T20-564-1985, EQV*NP-1542-1978, EQV
Ключевые слова:
ALUMINIUM BORATES CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING COMPLEXOMETRIC TITRATIONS DETERMINATION OF CONTENT EDTA SODIUM SODIUM BORATES CHEMICAL ANALYSIS AND TESTIN COMPLEXOMETRIC TITRATI